HCF Programmable Timer. 16 STAGE BINARY COUNTER LOW SYMMETR. OUTPUT RESISTANCE, TYPICALLY at VDD = 15V OSCILLATOR. HCF Datasheet, HCF PDF, HCF Data sheet, HCF manual, HCF pdf, HCF, datenblatt, Electronics HCF, alldatasheet, free. Part Number: HCF, Maunfacturer: ST Microelectronics, Part Family: HC, File type: PDF, Document: Datasheet – semiconductor.

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Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. What is my problem here? RS k Pin 4. Then you will see what is wired wrong. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Can anyone suggest where I am going wrong?

If pin 6 is high then the timer is always reset. Single transition mode to Gnd Pin Media Datashheet media New comments Search media.

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HCF Datasheet pdf – PROGRAMMABLE TIMER – ST Microelectronics

By continuing to use this site, you are consenting to our use of cookies. Please provide a schematic of what you have beside a schematic of the circuit in the datasheet. Auto Reset to Gnd Pin 6. Frequency Select Hcf454 to Gnd for Pin I was expecting nothing on the output except maybe momentarily ,until I had started the count and it had completed.

You must log in or register to reply here. Potentiometer Questions Started by norbss Yesterday at Output to LED through 1k Pin 9.

(PDF) HCF4541 Datasheet download

Started by fastline Yesterday at 8: The timer is working normally. Hi dr pepper, I see what you mean mate but just tried and still same results. CT 50pF Pin 3. Articles Top Articles Search resources. Forums New posts Search forums.

For a better experience, please enable JavaScript in hf4541 browser before proceeding. Just saying hello Started by MichaelaJoy Yesterday at 6: This is how I am using the IC. RTC k Pin 2. Hi to all, I am trying to build a long interval timer using the HCF IC and am not getting the results I expected, but I am not certain that I am reading the datasheet correctly.

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Welcome to our site! If I put the manual reset line to Gnd and power up I get a neg on the output. The datasheet is puzzling me to say the least. I datashest I am reading the logic and timing tables correctly and that the k, k and 50 pic is all in range?

Click here to register now. Replacing a 4 pin leaded inductor with a 2 datashet Started by gkmaia Yesterday at Not Connected Pin 5. To participate you need to register.